title: Exact log-rank tests for unequal follow-up.
mesh_terms: D001699:Biometry / Q000379:methods*; D001943:Breast Neoplasms / Q000401:mortality; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015233:Models, Statistical; D018570:Risk Assessment; D018709:Statistics, Nonparametric; D016019:Survival Analysis; D013997:Time Factors